Belgium  |  France |  Germany |  Italy |  Spain |  UK |  Switzerland |  Select a country or a catchment Country Catchment Belgium Rupel France Mayenne Germany Itter Unter-Main Main Rur/Roer Rhine-NRWF Elbe Italy Lambro Spain Llobregat UK Aire Calder Went Don-Rother Sussex-Ouse Switzerland Glatt DISCLAIMER Due to continuous improvements in European waste water treatment infrastructure, as well as climatic/meteorological changes, the GREAT-ER catchment implementations may need periodic updating. The user should assess if a given catchment is still fit for the intended research purposes.